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The recording situation of the chimpanzee vocalizations in the Kakombe valley in the feeding area (see Figure 1b). This was the open place where Jane Goodall fed the chimpanzees. At a distance between 5–15 meters the recordist (red sweater) was carrying a Nagra sound recorder (full track mono, 19 cm/s) and pointed a Sennheiser MKH 815T directional microphone (covered with a windhose) at the chimpanzees (shaded figures in the foreground). Photo copyright Frans X. Plooij.
